Stitch line
Also known as: stitching seam, 360 seam, parallax seam
The seam in a 360 video where the images from the two lenses are joined. Objects crossing it close to the camera can look broken, doubled or bent.
Updated
What it means
A dual-lens 360 camera sees the world through two fisheye lenses pointing in opposite directions. Where their fields of view overlap, software blends the two images together during stitching, and that blend zone is the stitch line. It usually runs around the sides of the camera, between the two lenses.
Because the two lenses sit a little apart, they see nearby objects from slightly different angles. Far away, that difference is tiny and the seam disappears. Up close, the same object lands in different places in each image, and the software cannot line it up perfectly, so the seam becomes visible.
How it works in practice
The practical rule is to keep important things away from the sides of the camera. Point one lens at the subject and the other at what matters next, so the seam falls on the less interesting parts of the scene such as empty sky, ground or a plain wall. On a helmet, the seam usually runs left and right, so friends riding beside you are the most likely to cross it.
Distance helps a lot. People and objects a couple of meters away stitch far more cleanly than things at arm length. Good light helps too, since noise and motion blur make it harder for the stitching algorithm to match details on both sides of the line.
What to watch out for
Fast movement across the seam is hard to hide. A hand, a ski pole or a car passing close to the side of the camera can tear or ghost for a moment, and no export setting fully fixes it. If a shot depends on that motion, change the mount so the subject moves in front of a lens instead.
A dirty or scratched lens shows only on its own half of the sphere, which makes the seam more obvious because the two sides no longer match. The same goes for flare from the sun hitting one lens. Clean both lenses before every session and check the seam in the app before an important shot, especially when using selfie stick angles or reframing close to the camera.
How RawClip handles it
RawClip does not read or stitch 360 files. Reframe your 360 clips to a flat MP4 or MOV in the Insta360 app or Insta360 Studio first, ideally pointing the virtual camera away from the seam, then upload the exports.